Three's Company S05 E13 Father of the Bride

"Come and knock on our door"

Cindy is flourished with the wealth of an older man who wants her to be his bride. Her persistant refusal to wed him doesn't seem to be enough, so Jack and Janet try to figure out a way to discourage him. They soon find themselves tempted by his generous promises for the future, before coming to their senses and rescuing Cindy from her worst nightmare.